Results 51 to 60 of about 3,999 (214)
Emerging Trends in Bioinspired Superhydrophobic and Superoleophobic Sustainable Surfaces
Advanced Materials, Volume 37, Issue 12, March 26, 2025.Biomimicry offers an exceptional opportunity to design materials with advanced properties. This review summarizes the latest findings for developing sustainable superhydrophobic–superoleophobic materials using biomimicry, their challenges, and future directions.
Cerys M. Cormican +3 more
wiley +1 more source
Conversion of a Coaxial Rotorcraft to a UAV—Lessons Learned
AerospaceA coaxial helicopter with a maximum take-off weight of 600 kg was converted to an unmanned aerial vehicle. A minimally invasive robotic actuator system was developed, which can be retrofitted onto the copilot seat of the rotorcraft in a short period of ...
Barzin Hosseini +4 more
doaj +1 more source
Hybrid geared traction transmissions [PDF]
, 1983 The basic configuration of geared traction drives, geometric and structural factors to be considered in their construction, and current work on hybrid helicopter transmissions rated at 500 and 3000 hp are ...
Nasvytis, A. L., White, G.
core +1 more source
The Role of Orogenic Collapse on Tectonic Inheritance of Passive Continental Margins
Tectonics, Volume 44, Issue 1, January 2025.Abstract The break‐up and drift of continents is governed by the reactivation of structures in the lithosphere that occur in preference to formation of new structures during rifting. Numerical analyses indicate that mantle heterogeneities should be a first‐order control on tectonic inheritance; however, the importance of mantle relative to crustal ...
Jeffrey Pollock
wiley +1 more source
Simulation of Unsteady Aerdynamic Load for Rigid Coaxial Rotor in Forward Flight with Vortex Particle Method [PDF]
, 2017 Co-axial rotor systems are frequently used for high-speed helicopters. Nevertheless, issues related to rotor-head drag, aerodynamic performance and vibration should also be considered. Simulating the unsteady aerodynamic loads for a rigid coaxial rotor,
Barakos, George N. +2 more
core
Supervised Control of a Flying Performing Robot using its Intrinsic Sound [PDF]
, 2009 We present the current results of our ongoing research in achieving efficient control of a flying robot for a wide variety of possible applications. A lightweight small indoor helicopter has been equipped with an embedded system and relatively simple ...
Gongora, Mario A. +3 more
core +1 more source
Conceptualization of a Small, Uncrewed, Microwave‐Powered Aircraft
International Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.This work conceptualizes wireless power transfer (WPT) between a tracking stationary ground transmitter and a mobile aircraft. Initial ground tests are performed to determine the viability of the Friis equation, using rectennas developed for operation at 2.45 GHz at 4 dBm of optimal input power.
Sameep Jagtap +5 more
wiley +1 more source
Empirical measurements of small unmanned aerial vehicle co-axial rotor systems [PDF]
, 2011 Small unmanned aerial vehicles (SUAV) are beginning to dominate the area of intelligence, surveillance, target acquisition and reconnaissance (ISTAR) in forward operating battlefield scenarios.
Bell, Jonathon, Prior, Stephen D.
core
Ventilator‐assisted preoxygenation in an aeromedical retrieval setting
Emergency Medicine Australasia, Volume 36, Issue 4, Page 596-603, August 2024.Ventilator‐assisted preoxygenation (VAPOX) is a method of preoxygenation and apnoeic ventilation, prior to intubation. This article describes the use of VAPOX during intubation of critically unwell patients in aeromedical retrieval setting. Abstract Objective Ventilator‐assisted preoxygenation (VAPOX) is a method of preoxygenation and apnoeic ...
Akmez Latona +4 more
wiley +1 more source
Journal of Industrial Design and Engineering Graphics, 2011 The objective of this paper is to analyze the role of helicopter rotor, to classify them by type, and to imagine new types of helicopter rotors that can equip future helicopters.
IONESCU Cristian Andrei
doaj